Asus RS300-E9-PS4 RS300-E9 series User Guide - Page 35

Configuring an expansion card, Standard Interrupt assignments

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5. Install the riser card bracket and PCI Express card assembly back into the PCI Express x16 slot on the motherboard. 5 2.5.2 Configuring an expansion card After installing the expansion card, configure the it by adjusting the software settings. 1. Turn on the system and change the necessary BIOS settings, if any. See Chapter 5 for information on BIOS setup. 2. Assign an IRQ to the card. Refer to the following tables. 3. Install the software drivers for the expansion card. When using PCI cards on shared slots, ensure that the drivers support "Share IRQ" or that the cards do not need IRQ assignments. Otherwise, conflicts will arise between the two PCI groups, making the system unstable and the card inoperable. Standard Interrupt assignments IRQ Priority Standard function 0 1 System Timer 1 2 Keyboard Controller 2 - Programmable Interrupt 3* 11 Communications Port (COM2) 4* 12 Communications Port (COM1) 5* 13 -- 6 14 Floppy Disk Controller 7* 15 -- 8 3 System CMOS/Real Time Clock 9* 4 ACPI Mode when used 10* 5 IRQ Holder for PCI Steering 11* 6 IRQ Holder for PCI Steering 12* 7 PS/2 Compatible Mouse Port 13 8 Numeric Data Processor 14* 9 Primary IDE Channel 15* 10 Secondary IDE Channel * These IRQs are usually available for ISA or PCI devices. ASUS RS300-E9 Series 2-13

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2-13
ASUS RS300-E9 Series
5.
Install the riser card bracket and
PCI Express card assembly back
into the PCI Express x16 slot on
the motherboard.
5
Standard Interrupt assignments
* These IRQs are usually available for ISA or PCI devices.
IRQ
Priority
Standard function
0
1
System Timer
1
2
Keyboard Controller
2
-
Programmable Interrupt
3*
11
Communications Port (COM2)
4*
12
Communications Port (COM1)
5*
13
--
6
14
Floppy Disk Controller
7*
15
--
8
3
System CMOS/Real Time Clock
9*
4
ACPI Mode when used
10*
5
IRQ Holder for PCI Steering
11*
6
IRQ Holder for PCI Steering
12*
7
PS/2 Compatible Mouse Port
13
8
Numeric Data Processor
14*
9
Primary IDE Channel
15*
10
Secondary IDE Channel
2.5.2
Configuring an expansion card
After installing the expansion card, configure the it by adjusting the software settings.
1.
Turn on the system and change the necessary BIOS settings, if any. See Chapter 5 for
information on BIOS setup.
2.
Assign an IRQ to the card. Refer to the following tables.
3.
Install the software drivers for the expansion card.
When using PCI cards on shared slots, ensure that the drivers support “Share IRQ” or that
the cards do not need IRQ assignments. Otherwise, conflicts will arise between the two PCI
groups, making the system unstable and the card inoperable.